78105355 has 16 divisors (see below), whose sum is σ = 98190144. Its totient is φ = 59530240.

The previous prime is 78105347. The next prime is 78105403. The reversal of 78105355 is 55350187.

It is not a de Polignac number, because 78105355 - 2³ = 78105347 is a prime.

It is a super-2 number, since 2×78105355² = 12200892959352050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78105355.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31107 + ... + 33523.

It is an arithmetic number, because the mean of its divisors is an integer number (6136884).

Almost surely, 2^78105355 is an apocalyptic number.

78105355 is a deficient number, since it is larger than the sum of its proper divisors (20084789).

78105355 is a wasteful number, since it uses less digits than its factorization.

78105355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 78105355 is about 8837.7234059457. The cubic root of 78105355 is about 427.4581516894.

The spelling of 78105355 in words is "seventy-eight million, one hundred five thousand, three hundred fifty-five".